THE SINUS MAXILLARIS 



89 



N- optic. 



C.m eel. 



e.ln.1. 



FIG. 32. SPECIMEN FROM A CHILD SEVEN YEARS, NINE MONTHS, AND TWELVE 



DAYS OLD. (Series D, No. 58.) 



Coronal section through the anterior portion of the body of the sphenoid 

 bone, to show the relations of the cranial nerves to the sphenoidal area. The 

 sphenoidal sinuses in this specimen show less extensive pneumatization of the 

 body of the sphenoid than is usually seen at this age. N .optic., Nervus opti- 

 cus; N.troch., nervus trochlearis; N .oculom., nervus oculomotorius; N.abduc., 

 nervus abducens; N.ophthal., nervus ophthalmicus; N.max., nervus maxil- 

 laris; N.c.pteryg., nervus canalis pterygoidei (Vidii); Ton.phar., tonsilla 

 pharyngea; C.inf., concha inferior; C.med., concha media; S.sph., sinus 

 sphenoidalis; S.cav., sinus cavernosus. 



